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We found 32 dictionaries with English definitions that include the word rigorous:
Click on the first link on a line below to go directly to a page where "rigorous" is defined.

General (29 matching dictionaries)

1. rigorous: Merriam-Webster.com [home, info]
2. rigorous: Oxford Dictionaries [home, info]
3. rigorous: American Heritage Dictionary of the English Language [home, info]
4. rigorous: Collins English Dictionary [home, info]
5. rigorous: Vocabulary.com [home, info]
6. rigorous: Macmillan Dictionary [home, info]
7. Rigorous, rigorous: Wordnik [home, info]
8. rigorous: Cambridge Advanced Learner's Dictionary [home, info]
9. rigorous: Wiktionary [home, info]
10. rigorous: Webster's New World College Dictionary, 4th Ed. [home, info]
11. rigorous: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. rigorous: Infoplease Dictionary [home, info]
13. Rigorous, rigorous: Dictionary.com [home, info]
14. rigorous: UltraLingua English Dictionary [home, info]
15. rigorous: Cambridge Dictionary of American English [home, info]
16. Rigorous: Wikipedia, the Free Encyclopedia [home, info]
17. Rigorous: Online Plain Text English Dictionary [home, info]
18. rigorous: Webster's Revised Unabridged, 1913 Edition [home, info]
19. rigorous: Rhymezone [home, info]
20. Rigorous: AllWords.com Multi-Lingual Dictionary [home, info]
21. rigorous: Webster's 1828 Dictionary [home, info]
22. rigorous: Free Dictionary [home, info]
23. rigorous: Hutchinson Dictionaries [home, info]
24. rigorous: Mnemonic Dictionary [home, info]
25. rigorous: WordNet 1.7 Vocabulary Helper [home, info]
26. rigorous: LookWAYup Translating Dictionary/Thesaurus [home, info]
27. rigorous: Dictionary/thesaurus [home, info]

Business (1 matching dictionary)

28. rigorous: Legal dictionary [home, info]

Computing (1 matching dictionary)

29. rigorous: Encyclopedia [home, info]

Science (1 matching dictionary)

30. Rigorous: Eric Weisstein's World of Mathematics [home, info]

(Note: See rigorousness for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (rigorous) ▸ adjective:  demanding strict attention to rules and procedures ("Rigorous discipline") ▸ adjective:  rigidly accurate; allowing no deviation from a standard ("Rigorous application of the law") ▸ adjective:  used of circumstances (especially weather) that cause suffering ("A rigorous climate") ▸ Also see rigorousness ▸ Words similar to rigorous ▸ Usage examples for rigorous ▸ Popular nouns described by rigorous ▸ Words that often appear near rigorous ▸ Rhymes of rigorous ▸ Invented words related to rigorous